Shuttle-tension device



Nov.1,1927. 21,647,542

F. RENZO SHUTTLE TENSION DEVI GE Filed De o. 27. 1925 mmyr an I WITNESS M YvomqeaqoRew o, )Y: Y

Patented Nov. 1, l927.- v

siiurTnEsrE-Nsrou DEVICE;

This inve ti n el es to wi ipn. de

erationw'ith a row: of fixed pinsol' gtlides .in

the shutt e, is employed a le er having guides normally spring held in a positi n. where and the thread, extending throughboth sets of guides, is normally maintained in Zi g-rag;

- form; the bends therein tending to" become straightened whenthe thread isf subjected to a pull and the lever isv consequentlymoved to bring its guides nto alinernent with the fixedQg-uides. In one form of lever for such device sv the guides are held thereon by forming at intervals inthe flat shank of the lever sets of twin-pairs of li ol es, and then threadiuga cord or string through thetwinpairs one after another and through the (loopor ring-shaped) guides in such manner that between each two pairs of holes formed twinspairs a guide will be bound to the k. therefore; limiting the, gage of the cord o r thread and making it a tedious operation to assemble the device. Again, the guides, have no means but the binding effected by the g string or cord and such shellacing as. thedevention i e usually-u d r s s fi a ep in he a m ng to keep h m, xe and i111 uprigh posit oupn the shank. The object class indicatediinthese of this. invention isjthereforexto impro.ve

tension devices of the In the drawing, 7 F frasmentam; plan, P y in section,

Fig. 2 is a top plan of the improved tension lever; Y

Fig. 3-is an underneathplanview thereof; Fig. 4 is a horizontal fragmentary top plan View, showing the guides in horizontal section;

Fig. 5 is a sectional view on the line 5'5, Fig. 3; and

Fig. 6 shows a slight modification. r In a cavity 1 in the shuttle 2 is arranged the mentioned line of fixed pins or guides 3.

' 4 is the pin affording the fulcrum for the improved tension lever; 5 the elastic band for holding the same in the retracted position, and 6 is the rotatively adjustable pin to which one end of the band is fastened as usual.

The lever proper 7 takes the usual form of't'ension levers used in this class in which the thread guides are secured thereto byna e I wi d, string 1 (thesis for Shuttles of the class ii -which, in coop- The .holes are necessarily small;

inward ananimugh the/ y ,oi

of a loom. shuttleembodying my in "through of the cord.

iti device in (that,

it consists or emit. ef fiiatmetal having a] s trz li'ght shank8anfd, one endbent to form a bearing 9-. for rec' eiving th e pin i and with.

and having- 11-bit 5, the free meet its extremity '1 0. bent ID to receive the band hich may be.. knot ed.- 0' e fecti s eng g meiit.withsaidentremityorarni l0.

-11 is the apertui'ed guides or eyelets tobe secured to. shank, 8 in a row 'These-;l1ave guid es ,p'ropl? are perpendicular and; hich.

re flaton' i r und r. sides; so the hen they rest on sup ".orting sui'face therefor (upperis rfaee in, j 1)1 'o,f the (shank. as.

ll at i di i li wlllib'epr'oof aga nst t lting and leosening.-

The guides m en-ang r at thoseintervals the lateraled guide.

- For ecuring th mistress, a cord,

string; oiqequiva ent fie libl felement 13. is

a 1 embiaseth h nk and o as "to the guide, then; each isturned back;

a ee en ge iefhe emenoe f theme 1211; he ther side of theshank; and.

wei h it lreadyo iP then th 2 2 in .eperatieesre ea d ru ii a l thegui shave been threaded and all the notches engagedin this way, when as a final step the ends of the flexible element are out off and tied and if desired the device is shellaced to stiffen said elementand firmly uniteits various portions with the shank.

vals. an d gesf of the shank are formed with oppositenotches 112;. in the, presente ziamplethereisonlva single notch on. each Side to. l

basal port-ions 11? with iespectto'whi'ch the correspond with. i

engage in the first pair fo f notch'ee i -My construction avoids forming, as in the *mentioned previous devices of this class,'two

pairs of holesto receive the cord or the like, one pair on each side of each guide, and it eliminates much 'of'the diificulty in assembling the device in that the manipulation of the cord. etc., requires no threadingsarily small holes-in) the shank.

The

with respect to (necesguides are held against tilting-and" therefore working loose by their extended bases 11*. Another factor insuring their being heldfirmly is the fact that the portions 13 0f. the cord exist as loops which reach inward from points, ('at thesid'es'of A the shank) further apart than the' width of i Letters Patent is:

' entrance 10 to thehole.

the basal part of each guide aperture (Fig. 5) and so can be made to act against each other in binding the guide in place.

Fig. 6 shows a modification of the extremity 10 of the lever 7, with hole 10 present; the extremity has been split from its end to the hole and the metal at one side of the split bent out of the plane of the metal at the other side to afford a V-shaped This facilitates engaging the elastic band with the lever: The band canbe knotted first and then en aged instead of engaged first and knotted,

t which latter is always a troublesome operation.

Having thus fully described my. invention what I claim and desire to secure by 1. A tension lever for a shuttle tension device including, in combination, a shank notched at intervals lengthwise of the same, a plurality of guides arranged along said shank, and flexible attaching means in wrapped engagement with said shank and ,1 extendingthrough and bindingsaid guides to said shank and also engaged in the several notches thereof. I

2. A tension lever for a shuttle tension device including, in combination, a shank having notches at intervals along the same a plurality of guides arranged along said shank, the notches being arranged insides of the shank opposite to'each other and relatively lateralof the guides; and flexible at- 1 taching means in wrapped engagement with said shank and extending through andbindshank, and

ing said guides to said shank and also engaged in the several notches thereof.

3. A tension lever for a shuttle tension device including, in combination, a shank, a plurality of guides arranged along said flexible means in wrapped engagement with said shank and having-pairs nausea of portions extending through said guides and each pair formed as loops projecting toward each other from sides oftthe shank relatively lateralof the guides. 4- A tension lever for a shuttle tension device including, in combination, a shank, a plurality shank, and flexible means in Wrapped engagement with said shank and having pairs of portions extending through said guides and each pair formed as loops projecting toward each other from sides of the shank relatively lateral of the guides, the portions of said means between the loops being arranged at the side ofthe shank opposed to the guides and arranged to cross each other.

5. A tension lever for device including, in combination, a shank, a plurality of upstanding guides arranged along said shank and each having a relatively enlarged flat base in contact with the shank, and flexible attaching means in wrapped engagement with said shank and binding the flat bases of said guides against the shank.

6. In a tension lever for a shuttle-tension device having a flat extremity extending from its fulcrum and formed with a hole to receive a knotted rubber band, said extremity having a \l-shaped entranceextending from an edge of the extremity to the hole. 7 In a tension lever for a shuttle tension device having a flat extremity extending from its fulcrum and formed with a hole to receive a knotted rubber band, said extremity havin the edge of the extremity to the hole and the portion at one side of the extremity and at one side'of thehole bent out of the plane thereof at the other side of the hole. a

In testimony whereof I affix my signature.

' FRANCESCO RENzo.

of guides arranged along said a shuttle tension 7 a' V-shaped slit extending from 

